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Gas Pole Saw 11.5 inch Guide Bar 2-Cycle pole chainsaw Photoresistor Optoresistor for tree 5539 trimming

4.6 out of 5 stars 70 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand COOCHEER
Horsepower 3.5 hp
Item Weight 0.01 Ounces
Manufacturer Suearpost
UPC 627385795323

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 5.4 x 4.5 x 3.3 inches; 0.01 ounces
  • Item model number ‏ : ‎ 5982
  • Date First Available ‏ : ‎ December 20, 2012
  • Manufacturer ‏ : ‎ Suearpost
  • ASIN ‏ : ‎ B00AQVYWA2
  • Customer Reviews:
    4.6 out of 5 stars 70 ratings

Customer reviews

4.6 out of 5 stars
70 global ratings

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Customers say

Customers find the chainsaw works excellently with a laser diode and appreciate its good value for the price. The build quality receives positive feedback, with one customer noting the solid leads, and the light resistance is particularly useful for light-controlled circuits, with many megohms in the dark. The accuracy is good, with one customer mentioning it's fairly consistent between pieces, though some report bent posts.

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FunctionalityValue for moneyBuild qualityLight resistanceAccuracyResistanceBent posts
29 customers mention "Functionality"29 positive0 negative

Customers find that the chainsaw works well, particularly when used with a laser diode.

"It works as described. It's sensitive to ambient light...." Read more

"The LDRs work well. I used a 10k resistor in a voltage divider and it had a pretty good range. All of the resistors read very similar values...." Read more

"...take the voltage off the negative side of these they work excellently with a little laser diode as a gate, no way I'll ever use 20 of them but it's..." Read more

"...I've used these for sensor demonstrations and they have worked extremely well." Read more

10 customers mention "Value for money"10 positive0 negative

Customers find the chainsaw offers good value for money.

"...Overall, inexpensive enough to experiment with." Read more

"Very useful for light-controlled circuits. All of the pieces are very close in value and none of them were dead on arrival...." Read more

"work fine, inexpensive" Read more

"Cheaper by the dozen, eh. Again these low cost devices do the job if you are a hobbyist without pretensions for extreme calibration tasks." Read more

8 customers mention "Build quality"8 positive0 negative

Customers praise the chainsaw's build quality, noting its solid leads, and one customer mentions the resistance values are in the thousands.

"...They have great response and nice solid leads. Great for bread boarding or soldered into a circuit. I would recommend them." Read more

"Good quality" Read more

"Very good product. A couple of them came slightly bent, but so far, I haven't found any that don't work." Read more

"good value and as expected quality" Read more

8 customers mention "Light resistance"8 positive0 negative

Customers appreciate the chainsaw's light resistance, noting its sensitivity to light and usefulness in light-controlled circuits, with one customer mentioning it provides many megohms in the dark.

"...It's sensitive to ambient light. It's able to recognize laser diode lights. Pros: * Easy to wire up *..." Read more

"...these things do look a heck of a lot cooler and they have a nice effect on led circuits...." Read more

"Very useful for light-controlled circuits. All of the pieces are very close in value and none of them were dead on arrival...." Read more

"Used with red LED and it works great. Many megs in the dark down to about 4-7Kohm at full LED current...." Read more

3 customers mention "Accuracy"3 positive0 negative

Customers appreciate the chainsaw's accuracy, with one noting its consistency between pieces.

"...If you hook these up to a digital pin with the 10K it's very accurate and responsive." Read more

"...Fairly consistent between pieces and packaging and shipping was fast and good. Happy customer!" Read more

"Nicely made, accurate description...." Read more

6 customers mention "Resistance"3 positive3 negative

Customers have mixed experiences with the chainsaw's resistance feature, with some finding it good while others report issues, with one customer noting that the default resistance seems exceptionally high.

"...are excellent CdS Photo Resistors that provide a broad and rapid change in resistance depending on the strength of the light source...." Read more

"These are OK...the default resistance seems exceptionally high and i was only able to illuminate an LED with a 5v source to about 1/3 of its..." Read more

"Good resistor...." Read more

"Wide variation in resistance which is to be expected. As long as you can take that into account they work fine." Read more

3 customers mention "Bent posts"0 positive3 negative

Customers report issues with bent posts.

"...Unfortunately, they arrived with the (rather fiddly) leads all bent every which way...." Read more

"...Only problem is that some of the posts were a bent but not damaged during shipping." Read more

"Very good product. A couple of them came slightly bent, but so far, I haven't found any that don't work." Read more

It works with my laser diode!
5 out of 5 stars
It works with my laser diode!
It works as described. It's sensitive to ambient light. It's able to recognize laser diode lights. Pros: * Easy to wire up * It's sensitive to light (obviously) Cons: * None Here's a recent project I am working on (see video and screenshots below). It's a laser trip alarm system. All of these components are available from Amazon. Laser part: * Laser diode (GeeBat 10pcs Mini Laser Dot Diode Module) * 4 x AA batteries (Eneloop) * Battery Holder (WAYLLSHINE 6 Pcs 4 x 1.5V (6V) AA Battery Spring Clip) * Wires Reader part: * Rfid reader (Gowoops RFID Kit - Mifare RC522 RF IC Card Sensor Module) * Photoresistor (SUNKEE 20pcs Photo Light Sensitive Resistor Photoresistor) * Piezo Buzzer (Piezo Buzzer - PS1240 from Adafruit. Not from Amazon) * NodeMcu (HiLetgo New Version NodeMCU LUA) * Breadboard (Elegoo 3pcs MB-102 Breadboard) Photoresistor Tip: In order for the photoresistor to act as in input in my NodeMcu microcontroller, here's what I did 1. Wire one leg to a 3V/5V rail 2. Wire another leg to the ANALOG input of the microcontroller. It needs to be an ANALOG input! 3. Wire up one leg of a 10K ohm resistor to the GROUND rail 4. Wire up the other leg of the resistor to the leg of the photoresistor that's connected to the ANALOG input (see my screenshots)
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Top reviews from the United States

  • Mark Serrano
    5.0 out of 5 stars It works with my laser diode!
    Reviewed in the United States on July 21, 2017
    Verified Purchase
    The media could not be loaded.
    It works as described. It's sensitive to ambient light. It's able to recognize laser diode lights.

    Pros:
    * Easy to wire up
    * It's sensitive to light (obviously)

    Cons:
    * None

    Here's a recent project I am working on (see video and screenshots below). It's a laser trip alarm system. All of these components are available from Amazon.

    Laser part:
    * Laser diode (GeeBat 10pcs Mini Laser Dot Diode Module)
    * 4 x AA batteries (Eneloop)
    * Battery Holder (WAYLLSHINE 6 Pcs 4 x 1.5V (6V) AA Battery Spring Clip)
    * Wires

    Reader part:
    * Rfid reader (Gowoops RFID Kit - Mifare RC522 RF IC Card Sensor Module)
    * Photoresistor (SUNKEE 20pcs Photo Light Sensitive Resistor Photoresistor)
    * Piezo Buzzer (Piezo Buzzer - PS1240 from Adafruit. Not from Amazon)
    * NodeMcu (HiLetgo New Version NodeMCU LUA)
    * Breadboard (Elegoo 3pcs MB-102 Breadboard)

    Photoresistor Tip:
    In order for the photoresistor to act as in input in my NodeMcu microcontroller, here's what I did
    1. Wire one leg to a 3V/5V rail
    2. Wire another leg to the ANALOG input of the microcontroller. It needs to be an ANALOG input!
    3. Wire up one leg of a 10K ohm resistor to the GROUND rail
    4. Wire up the other leg of the resistor to the leg of the photoresistor that's connected to the ANALOG input (see my screenshots)
    Customer image
    Mark Serrano
    5.0 out of 5 stars
    It works with my laser diode!

    Reviewed in the United States on July 21, 2017
    It works as described. It's sensitive to ambient light. It's able to recognize laser diode lights.

    Pros:
    * Easy to wire up
    * It's sensitive to light (obviously)

    Cons:
    * None

    Here's a recent project I am working on (see video and screenshots below). It's a laser trip alarm system. All of these components are available from Amazon.

    Laser part:
    * Laser diode (GeeBat 10pcs Mini Laser Dot Diode Module)
    * 4 x AA batteries (Eneloop)
    * Battery Holder (WAYLLSHINE 6 Pcs 4 x 1.5V (6V) AA Battery Spring Clip)
    * Wires

    Reader part:
    * Rfid reader (Gowoops RFID Kit - Mifare RC522 RF IC Card Sensor Module)
    * Photoresistor (SUNKEE 20pcs Photo Light Sensitive Resistor Photoresistor)
    * Piezo Buzzer (Piezo Buzzer - PS1240 from Adafruit. Not from Amazon)
    * NodeMcu (HiLetgo New Version NodeMCU LUA)
    * Breadboard (Elegoo 3pcs MB-102 Breadboard)

    Photoresistor Tip:
    In order for the photoresistor to act as in input in my NodeMcu microcontroller, here's what I did
    1. Wire one leg to a 3V/5V rail
    2. Wire another leg to the ANALOG input of the microcontroller. It needs to be an ANALOG input!
    3. Wire up one leg of a 10K ohm resistor to the GROUND rail
    4. Wire up the other leg of the resistor to the leg of the photoresistor that's connected to the ANALOG input (see my screenshots)
    Images in this review
    Customer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer image
    3 people found this helpful
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  • Alee
    5.0 out of 5 stars Works well
    Reviewed in the United States on June 11, 2014
    Verified Purchase
    The LDRs work well. I used a 10k resistor in a voltage divider and it had a pretty good range. All of the resistors read very similar values. This is an inexpensive way to load up on LDRs for future projects.
    7 people found this helpful
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  • Fred Gerantabee
    3.0 out of 5 stars These are OK... the default resistance seems ...
    Reviewed in the United States on December 23, 2015
    Verified Purchase
    These are OK...the default resistance seems exceptionally high and i was only able to illuminate an LED with a 5v source to about 1/3 of its capacity under direct light. Overall, inexpensive enough to experiment with.
    Helpful
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  • Justin
    4.0 out of 5 stars Good resistor.
    Reviewed in the United States on April 7, 2013
    Verified Purchase
    I think these are just a bit to much for how simple of a ing they are. Realistically you could use an LED in combo with analog readings from an arduino and trigger the same effect, but, these things do look a heck of a lot cooler and they have a nice effect on led circuits. I would say if the price bumped down, or you get more for your money, these would be five stars, no doubt. But until then, four stars is perfect for the product.
    Helpful
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  • Forrest
    5.0 out of 5 stars Plays well with arduino and a 10K resistor.
    Reviewed in the United States on June 11, 2016
    Verified Purchase
    I used these for an arduino light gate, and if you throw a 10K ohm resistor from a terminal of these to ground and take the voltage off the negative side of these they work excellently with a little laser diode as a gate, no way I'll ever use 20 of them but it's fun to have around. At ambient light the analogRead from arduino is about 200-300, completely dark it's about 0-100, and with the laser on it's it's 1000. If you hook these up to a digital pin with the 10K it's very accurate and responsive.
    One person found this helpful
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  • Jerry Davis
    5.0 out of 5 stars Well constructed and work great
    Reviewed in the United States on October 2, 2015
    Verified Purchase
    These are excellent CdS Photo Resistors that provide a broad and rapid change in resistance depending on the strength of the light source. Resistance of these run 50-60 Ohms in very strong light to around 500K Ohms in complete darkness. I've used these for sensor demonstrations and they have worked extremely well.
    5 people found this helpful
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  • JerryEl
    5.0 out of 5 stars Yea! Got Lights!
    Reviewed in the United States on March 30, 2016
    Verified Purchase
    I used these to replace the photoresistors in a decorative, single LED, deck rail lights (one rechargeable AAA battery) that quit working and I wasn't sure that was the problem because with a newly charged battery the light came on but wouldn't turn off. Turned out I guessed correctly and these photoresisters did the trick so for $6.34 I saved the replacement cost of around $35 each. Plus I have many extras in case any of the other lights quit working. So I would recommend this product for this use.
    One person found this helpful
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  • Bob
    4.0 out of 5 stars Very useful for light-controlled circuits
    Reviewed in the United States on September 2, 2015
    Verified Purchase
    Very useful for light-controlled circuits. All of the pieces are very close in value and none of them were dead on arrival.

    Unfortunately, they arrived with the (rather fiddly) leads all bent every which way. It would have been nice to receive these on paper tape or at least packed in a way that they didn't need to be bent manually for storage.
    One person found this helpful
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