Microcontroller keyboard key matrix 4*4 4X4 4*3 4X3 keyboard 16/12 key industrial keyboard row scan
4x3 12 button matrix keyboard module:
1. The keyboard matrix allows you to quickly add controls to your electronic project.
2. It provides 0-9 numbers, as well as standard stars (*) and hash symbols.
3. Easy to communicate with any microcontroller.
4x4 16 button matrix keyboard module:
1. Maximum size 6.5*6.4CM
2. Single weight: 13.3 grams
3. If you use a multimeter to test (resistance file), the 1 2 3 A multimeter will beep.
Row 2 3 4 5 B
Row 3 6 7 8 C
Row 4 * 0 # D All display only resistance readings. The multimeter will not beep. No matter the reading or the beeping, it means that the line is connected, but because the resistance of the buttons in the second row, the third row and the fourth row is too high, it will not beep. .
4. After turning on the device, the software automatically obtains the current working status of the relay
Q1:what is your advantages?
A:Our company is a distributor of electronic components for well-known suppliers worldwide. Our products are IC, module and sensor. All the electronic components you want!
Q2:What is your warranty?
A:90 days after goods have been received.our products are original and produced by original manufacturers and tested before they are sent out totally.
Q3: Can you send me your catalog?
A:Of course, if you can leave your email for communication, we would be grateful.
Q4: Can I buy a few samples or test orders for the first time?
A: we support sample orders and small orders. Welcome to contact us.
Q5: Do you have stock?
A:We have a lot of stock, including various ic, modules, sensors. Some products require time to produce in large quantities.
Q6: Why are some product photos not real?
A:Because our company has many products, and choose products by model. I hope that when you choose the product, you can determine the model and specifications with us.At the same time, we are constantly updating the picture.
Q7: What are your company's payment and shipping methods?
A:Our commonly used shipping are DHL, EMS, UPS, etc. Payments are paid through the Alibaba platform. Of course, like our long-term partners, offline payments are better.
- Step 1Find your interested products by search keywords
- Step 2Contact the supplier by clicking ”Enquire” or “request meeting” button, otherwise, you also could consult our import consultant.
- Step 3After verifying your email, get response from suppliers or our trade manager will contact you as soon as possible
- Step 4Set up meeting with the Chinese supplier without language barrier