Does this kit come with all the components listed in the BOM or do those need to be purchased separately?
Hey Trebor,
Everything that is included with each kit can be found on the product page under “Kit Contents” but I have copied them below:
DKS-LEARN2SOLDER-THT-KIT-ND
| CF14JT120R | RES 120 OHM 5% 1/4W AXIAL | 1 |
|---|---|---|
| CR2032 | BATTERY LITHIUM 3V COIN 20MM | 1 |
| TLC555CP | IC OSC SINGLE TIMER 2.1MHZ 8-DIP | 1 |
| ICS-308-T | IC SOCKET, DIP, 8P 2.54MM PITCH | 1 |
| C320C104K5R5TA7317 | CAP CER 0.1UF 50V X7R RADIAL | 1 |
| CF14JT3M30 | RES 3.3M OHM 5% 1/4W AXIAL | 1 |
| LTL-1CHGE | LED GREEN CLEAR T/H | 1 |
| LTL1CHKEKNN | LED RED CLEAR T-1 T/H | 1 |
| CF14JA1K00 | RES 1K OHM 5% 1/4W AXIAL | 1 |
DKS-LEARN2SOLDER-SMD-KIT-ND
| CR2032 | BATTERY LITHIUM 3V COIN 20MM | 1 |
|---|---|---|
| C1206C104K5RAC7210 | CAP CER 0.1UF 50V X7R 1206 | 1 |
| LMC555CMX/NOPB | IC OSC SINGLE TIMER 3MHZ 8-SOIC | 1 |
| RC0402FR-071K69L | RES 1.69K OHM 1% 1/16W 0402 | 3 |
| RMCF1206JT510R | RES 510 OHM 5% 1/4W 1206 | 1 |
| LSM0805543V | LED WHITE CLEAR 0805 SMD | 1 |
| QBLP595-IG5 | LED GREEN CLEAR 0402 SMD | 3 |
| RMCF0603FT590R | RES 590 OHM 1% 1/10W 0603 | 2 |
| RC0805FR-0743RL | RES 43 OHM 1% 1/8W 0805 | 1 |
| RMCF1206FT3M30 | RES 3.3M OHM 1% 1/4W 1206 | 1 |
| BL-HJE33A-AV-TRB | LED ORANGE-RED CLEAR 1206 SMD | 1 |
| XZMOK53W-8ST | LED ORANGE CLEAR CHIP SMD | 2 |
Nice kit, the assembly instructions are quite clear. I have included some measurements on this post related to this circuit for anyone interested.
Also here is a LTSpice simulation of this circuit, the following plot shows the output voltage and current thru the Light Emitting Diodes (LED) alternating in the sequence,
As an alternative method, the anode and cathode of the Light Emitting Diodes (LEDs) can also be identified without a Multimeter using a magnifier and looking under the device as shown in one of the LEDs of the kit,
At least this is another option available to double check the connections visually if the LED is not too small and depending on manufacturer.
Here are some magnifier tools that are useful for this,
Is there a troubleshooting guide for soldering newbs? I have it all soldered but only 1 led lights up, is there a way to find a cold solder with a multimeter? What soldering iron and solder are you using to make it look so easy?
fred3,
Welcome to the DigiKey TechForum.
We do not have a troubleshooting guide, but you can search the internet for help.
You can use the resistance setting on the multimeter to check if a solder connector is a direct connection. Touch the leads of the meter together, and that’s the reading you should get with a good solder connection. If you get a high resistance reading, then you should resolder that connection. I don’t know what equipment they used, but if you use solder which contains lead, it will melt quicker and flow easier. If the solder has a flux core, that will help also.
If the LED is flashing, then the problem would be with the other LED. If it just stays on solid, the problem may be with the connections to the IC. Good luck with the project.