--- product_id: 58816135 title: "555 Monostable Timer Project PCB Self Build Kit" brand: "rk education" price: "SAR 48" currency: SAR in_stock: true reviews_count: 8 url: https://www.desertcart.com.sa/products/58816135-555-monostable-timer-project-pcb-self-build-kit store_origin: SA region: Saudi Arabia --- # Versatile trigger input compatibility Professional double-sided PCB with silkscreen Variable timing with precision resistor 555 Monostable Timer Project PCB Self Build Kit **Brand:** rk education **Price:** SAR 48 **Availability:** ✅ In Stock ## Summary > ⏳ Build smarter, time better — own the pulse of innovation! ## Quick Answers - **What is this?** 555 Monostable Timer Project PCB Self Build Kit by rk education - **How much does it cost?** SAR 48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/58816135-555-monostable-timer-project-pcb-self-build-kit) ## Best For - rk education enthusiasts ## Why This Product - Trusted rk education brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pro-Grade PCB Design:** Double-sided, pre-drilled board with clear silkscreen for streamlined assembly. - • **Expandable Output Power:** Includes space for transistor drive circuit to boost output capabilities. - • **Multi-Trigger Flexibility:** Supports various trigger inputs to fit diverse electronic applications. - • **Educational & DIY Friendly:** Ideal for STEM learning (ages 11-16) with comprehensive online schematics. - • **Customizable Timing Control:** Adjust your timer effortlessly with a variable resistor for precision projects. ## Overview The 555 Monostable Timer Project PCB Kit by Rk Education offers a professional-grade, customizable timing solution with a variable resistor and multi-trigger input support. Featuring a double-sided, silkscreened PCB designed for easy assembly and expansion, this kit is perfect for educational purposes and DIY electronics enthusiasts seeking precision and versatility. ## Description 555 Monostable Timer Project PCB Self Build Kit ## Features - 555 Monostable Timer Project — More than just a timer - The time can be varied with the variable resistor - Can be used with various trigger inputs - No printed material are supplied - Schematic and documentation available from www.rkeducation.co.uk ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Rk Education | | Part number | 555 MONO KIT | | Item Weight | 10 g | | Package Dimensions | 6.3 x 4.2 x 1.4 cm; 10 g | | Manufacturer reference | 555 MONO KIT | | Style | 555 Monostable | | Item Package Quantity | 1 | | Batteries included? | No | | Batteries Required? | No | ## Images ![555 Monostable Timer Project PCB Self Build Kit - Image 1](https://m.media-amazon.com/images/I/81gfFkmzeTL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A good value product *by D***) on 28 February 2023* I bought this for a project at good value, simple to assemble but would have been better if the assembly instructions came with it rather than having to search online for them... ### ⭐⭐⭐⭐ great product, poor documentation *by M***N on 23 October 2024* Product was great, but links provided for the documentation did not work ### ⭐ Don’t bother poor quality components dosnt work. *by U***D on 22 September 2025* Don’t bother. Lack of instructions leaves you googling to try and find any help with the product. I ordered the first one and it lit up the red LED and when you press the switch it turns off the red LED turns on the Green one. Great. But then the green one never goes out. The variable resister makes no difference to the times.I built the circuit with following the picture on the item and soldered it as you would usually do.Figuring I got a dud I ordered another one.This time both LEDs stay lit. The trigger dosnt work at all. Same wiring.Don’t waste your money. Looks like the two resistors nearest the trigger switch are dud. Tried to de solder them but one broke and I gave up. Can’t test the caps but the resistors will cause the circuit not to work. ## Frequently Bought Together - Rk Education 555 Monostable Timer Project PCB Self Build Kit - Youmile 50 pcs NE555P Precision Timer Single NE555 Timer IC NE555P Pulse Generator Single Bipolar DIP-8 + 50 pcs NE555 Socket --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/58816135-555-monostable-timer-project-pcb-self-build-kit](https://www.desertcart.com.sa/products/58816135-555-monostable-timer-project-pcb-self-build-kit) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-05-19*