rona.bestCase studies

Case studies.

Real systems we built and support. We don't name clients without permission — but we show the mechanics honestly, down to what it looks like in a terminal.

case 01 / e-commerce

Orders processed without a human.

cosmetics manufacturer · online store

Every paid order used to be entered by hand: CRM, invoice, delivery note, coordination with production in chats. We wired it into one pipeline: an online payment starts the chain, and the team just presses buttons in Telegram.

0 manual stepsfrom payment to delivery note
6 deal stagesdriven by Telegram buttons
  • Payment → account in EspoCRM (matched by phone or auto-created), a deal with delivery details and promo code
  • PDF invoice and delivery note are generated automatically and attached to the deal
  • Telegram chain: manager → production (Accept/Decline) → logistics (tracking number in one message) — every click moves the CRM stage, stock is written off by SKU
n8nEspoCRMPDF generationTelegram BotNova Poshta
order-pipeline · n8n
case 02 / manufacturing

Mini-MRP: recipes and raw materials.

the same manufacturer — next level

Raw material needs were calculated in spreadsheets: errors, surprise shortages, manual write-offs. Now the CRM knows whether there is enough material — and keeps the stock itself.

10 secondsfrom status to calculation
+10% wastagebuilt into every calculation
  • An order set to "In progress" is picked up automatically: the recipe (BOM) and per-ingredient needs with a technological loss factor
  • Stock and minimum checks: a shortage → "Waiting" status with an exact purchasing list
  • Enough material → ingredients written off, finished goods received, and a report inside the order
n8nEspoCRMBOM / recipesinventory
mrp · production
case 03 / POS

A mobile cash register for events.

pop-up retail · food courts and events

At offsite events the cash register is a phone: the POS page is served by the automation platform itself, with products from the database. Cash with a change calculator or QR payment — and every sale lands in the books instantly.

2 payment methodsQR + cash
~3 secondsto payment confirmation on screen
  • A cart with discounts and SKU search, built for a cashier's phone
  • QR payments: signed invoices, callback signature verification, duplicate-payment protection
  • Every sale → an account (from payer data), a deal and an invoice in the CRM — automatically
n8npayment gatewayPostgreSQLEspoCRM
pos · payments
case 04 / telegram

A subscription club in Telegram.

a private professional community

A paid club with tiers, a private group and a content library — without a full-time administrator. The bot sells subscriptions, controls access and maintains the content catalog itself.

3 tiers1 / 6 / 12 months
24/7access managed automatically
  • Payments via a gateway with signed invoices; the payment webhook opens group access
  • Channel posts are auto-indexed by hashtags into a paginated catalog with menus
  • A web admin console: stats, revenue chart, subscription management, one-click group removal
Telegram Botpayment gatewayPostgreSQLn8n
club-bot · telegram
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