Reviews Mother Circuit Board

DORHEA 3 Set Electronic Flashing Lights Soldering Practice Board LED NE555 CD4017 IC LED Electronic Lights Kits Red Blue Dual-Color DIY Kit Strobe Electronic Suit Flashing Lights Components DIY

The circuit working voltage: DC9-12V. The product does not include battery. It is simple to make, has obvious effect and is interesting. The circuit can be used for electronic toys, art lighting, LED billboards ,ect..
This suite adopts simulation light circuit made with NE555 and CD4017, the blue LED and red LED flashed alternately according to the pulse. The multivibrator composed of NE555 will have a certain frequency of oscillation signal send to CD4017 decimal counter/pulse distributor, in order to count..
This is a very interesting circuit for simulating the visual effects of warning lights, blue and red lights flash alternately according to the pulse respectively. This kit is simple to assemble, suitable for electronics enthusiasts and students to practice. Design optimized for training, it adopts 1.6mm electric board and nice layout of the components..
Specially designed for the training, cost-effective, red diodes and blue diodes can be opened with wire connections to expand the lamp distance, the original board number and model on the circuit board, the right seat can be installed..

IMPORTANT - Must check original model number on drives Circuit Board before purchasing, see image for guide..
Drives are from new consoles split for parts, outer casing may show some minor cosmetic marks from storage..
Model: KES-860A/ KEM-860AAA/ KEM-860PHA/ KEM-860PAA. Inside consoles only with drive circuit board BDP-010..
Installation requires the drive to be installed with the original Circuit Board as this is married to the console..
Nextec 1 Year Replacement Warranty and Free After Sales Support included with your purchase..

Modular design makes it suitable for use with output modules, sensors and remote transmitters.Compact structure, easy to install.Intuitive clear reading, high reliability, measuring accuracy is ±1%.High-definition displays show both instantaneous and cumulative flow.Can be widely used to measure diesel, kerosene, gasoline, etc..
This digital turbine flow meter has modular design, high accuracy, compact size and stable performance. Easy to replace and maintain internal components. Suitable for use with output modules, sensors and remote transmitters..
Malfunction and solution:The flow meter is not accurate. 1. The method of field calibration is not correct. Calibrate again. 2. The flow rate on the meter is below the lowest. Increase the flow rate. 3. The flow meter is blocked by the dry liquid. Take out the impeller and clean it carefully and make sure the impeller turns freely..
4. The impeller is wrapped by the sealing material. Remove the meter and make sure the impeller turns freely. 5. Too close to the impeller. Install properly 6. Too close to the motor or electronic noise environment.
The meter can not calibrate. 1. Circuit board is break down. Replace the circuit board. 2. Button is fail to press. Replace the circuit board..

Circuit Board Size: Glass Fiber Board 22.4cm*7cm, Working Voltage: Double AC 12V.
Fully Separated Components, Four High-power Triodes, Two Stereo Channels, Each Channel can Reach to 100W..
The Power Amplifier Circuit of Household Power Amplifier and Active Speaker has a Good Effect..
This Power Amplifier Uses a Typical OCL Circuit, Which Has the Advantages of High Stability, Wide Frequency Response Range, Good Fidelity, etc. This Circuit is Often Used in High-Fidelity Sound Reproduction Equipment..
This OCL Stereo Amplifier is Suitable for the Assembly and Uuse of Electronic Enthusiasts and Audiophiles..

This product is suitable for the SOP8 chip of the pin distance was 1.27mm (24/25/26/93 Series)..
The clip was vulnerable devices, please be careful..
Used for a sop8 chip programming that has been soldered on circuit board , it can online programming the sop8 chip , do not need to take the chip of the circuit board..
Package include: 1x clip, 1x cable, 1x adapter board..

The Circuit Board Skinny Tie features a graphic print of a green circuit board that any true geek would love.

Only suitable for 38PIN narrow version ESP32 without mounting holes, not suitable for other versions..
This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative..
2 TYPE CONNECTIONS， Pin Header & Screw Terminal. Just select them according to your purpose..
The expansion board is a double-layer board. One pin is wired on both sides. Therefore, the circuit is stable and highly reliable, and there will be no poor circuit contact and unstable signal transmission..
The board of this version has been soldered completely. No need to solder parts by yourself, which is very convenient to use..